diff --git a/00-backend/src/main/java/de/htwsaar/webshop/WebshopApplication.java b/00-backend/src/main/java/de/htwsaar/webshop/WebshopApplication.java
index 785b566..28afcf5 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/WebshopApplication.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/WebshopApplication.java
@@ -5,10 +5,10 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
 public class WebshopApplication {
-	private static final String BASE_PORT = "8085";
+    private static final String BASE_PORT = "8085";
 
-	public static void main(String[] args) {
-		System.setProperty("server.port", BASE_PORT);
-		SpringApplication.run(WebshopApplication.class, args);
-	}
+    public static void main(String[] args) {
+        System.setProperty("server.port", BASE_PORT);
+        SpringApplication.run(WebshopApplication.class, args);
+    }
 }
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/controller/ArticleController.java b/00-backend/src/main/java/de/htwsaar/webshop/controller/ArticleController.java
index e4b9150..679cddb 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/controller/ArticleController.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/controller/ArticleController.java
@@ -12,8 +12,9 @@ import org.springframework.web.bind.annotation.*;
 import java.util.List;
 import java.util.UUID;
 
-import static de.htwsaar.webshop.config.ControllerPathConfig.*;
-import static de.htwsaar.webshop.config.ParameterConfig.*;
+import static de.htwsaar.webshop.config.ControllerPathConfig.ARTICLE_BASE;
+import static de.htwsaar.webshop.config.ControllerPathConfig.ARTICLE_GET_ALL;
+import static de.htwsaar.webshop.config.ParameterConfig.PARAM_UUID;
 import static de.htwsaar.webshop.util.LoggerUtil.logRequest;
 
 @RestController
@@ -41,7 +42,7 @@ public class ArticleController {
 
     @RequestMapping(path = ARTICLE_BASE, method = RequestMethod.POST, produces = "application/json")
     public ResponseEntity<Boolean> add(HttpServletRequest request,
-                                            @RequestBody Article article) {
+                                       @RequestBody Article article) {
         logRequest(request);
         if (article.getPrice100() < 0 || article.getStock() < 0 ||
                 article.getDiscount100() > 100 || article.getDiscount100() < 0) {
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/controller/ImageController.java b/00-backend/src/main/java/de/htwsaar/webshop/controller/ImageController.java
index 0e7d11c..d691b16 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/controller/ImageController.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/controller/ImageController.java
@@ -12,8 +12,10 @@ import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
 
-import static de.htwsaar.webshop.config.ControllerPathConfig.*;
-import static de.htwsaar.webshop.config.ParameterConfig.*;
+import static de.htwsaar.webshop.config.ControllerPathConfig.IMAGE_BASE;
+import static de.htwsaar.webshop.config.ControllerPathConfig.IMAGE_GET_ALL;
+import static de.htwsaar.webshop.config.ParameterConfig.PARAM_ARTICLE_ID;
+import static de.htwsaar.webshop.config.ParameterConfig.PARAM_IMAGE_ID;
 import static de.htwsaar.webshop.util.LoggerUtil.logRequest;
 
 @RestController
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/ArticleRepository.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/ArticleRepository.java
index fc0135f..eae2fbc 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/ArticleRepository.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/ArticleRepository.java
@@ -12,6 +12,8 @@ import java.util.UUID;
 @SuppressWarnings("unused")
 public interface ArticleRepository extends JpaRepository<Article, Long> {
     Optional<Article> findArticleById(@NonNull Long id);
+
     Optional<Article> findArticleByName(@NonNull String Name);
+
     Optional<Article> findArticleByUuid(@NonNull UUID uuid);
 }
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/ImageRepository.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/ImageRepository.java
index d2fd058..b8c3808 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/ImageRepository.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/ImageRepository.java
@@ -11,6 +11,8 @@ import java.util.List;
 @Repository
 public interface ImageRepository extends JpaRepository<Image, Long> {
     List<Image> findAllByArticleId(@NonNull Long articleId);
+
     Image findImageByArticleId(@NotNull Long articleId);
+
     Image findImageById(Long id);
 }
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Article.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Article.java
index c146831..9d185fa 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Article.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Article.java
@@ -3,7 +3,10 @@ package de.htwsaar.webshop.repository.entities;
 import jakarta.persistence.*;
 import jakarta.validation.constraints.Max;
 import jakarta.validation.constraints.Min;
-import lombok.*;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
 
 import java.util.UUID;
 
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/OrderItem.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/OrderItem.java
index ab89e98..fb05a6a 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/OrderItem.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/OrderItem.java
@@ -6,7 +6,6 @@ import lombok.*;
 import org.hibernate.annotations.OnDelete;
 
 import java.io.Serializable;
-import java.util.Objects;
 
 @Entity
 @Table(name = "OrderItems")
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Review.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Review.java
index 84e8cf0..7bbaf3e 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Review.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Review.java
@@ -2,8 +2,8 @@ package de.htwsaar.webshop.repository.entities;
 
 import jakarta.persistence.*;
 import jakarta.validation.constraints.Max;
-import lombok.AllArgsConstructor;
 import jakarta.validation.constraints.PositiveOrZero;
+import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/service/ArticleService.java b/00-backend/src/main/java/de/htwsaar/webshop/service/ArticleService.java
index a3f4d2e..be72c57 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/service/ArticleService.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/service/ArticleService.java
@@ -9,12 +9,19 @@ import java.util.UUID;
 @SuppressWarnings("unused")
 public interface ArticleService {
     List<Article> findAll();
+
     Article findByUUID(UUID uuid);
+
     Article findByTitle(String title);
+
     Article findById(Long articleId);
+
     void delete(Long id);
+
     Article save(Article article);
+
     double getRating(Long id);
+
     double getRating(UUID uuid);
 
     ArticleModel from(Article article);
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ArticleServiceImpl.java b/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ArticleServiceImpl.java
index ca55c0c..bf2265e 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ArticleServiceImpl.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ArticleServiceImpl.java
@@ -10,7 +10,6 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
 
@@ -21,7 +20,7 @@ public class ArticleServiceImpl implements ArticleService {
     private final ReviewRepository reviewRepository;
 
     @Autowired
-    public ArticleServiceImpl(ArticleRepository articleRepository, ReviewRepository reviewRepository, ArticleService articleService) {
+    public ArticleServiceImpl(ArticleRepository articleRepository, ReviewRepository reviewRepository) {
         this.articleRepository = articleRepository;
         this.reviewRepository = reviewRepository;
     }
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ImageServiceImpl.java b/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ImageServiceImpl.java
index e910677..c223185 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ImageServiceImpl.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ImageServiceImpl.java
@@ -46,7 +46,7 @@ public class ImageServiceImpl implements ImageService {
 
     @Override
     public ImageModel from(Image image) {
-        return new ImageModel(articleService.findById(image.getArticleId()).getUuid(),image.getUri());
+        return new ImageModel(articleService.findById(image.getArticleId()).getUuid(), image.getUri());
     }
 
     @Override
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ValidatorServiceImpl.java b/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ValidatorServiceImpl.java
index f0c4dac..3955928 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ValidatorServiceImpl.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/service/impl/ValidatorServiceImpl.java
@@ -22,8 +22,8 @@ public class ValidatorServiceImpl implements ValidatorService {
      * Jakarta Validator
      *
      * @param validatable any Validatable
+     * @param <T>         any Validatable
      * @return whether the Object is Invalid
-     * @param <T> any Validatable
      */
     @Override
     public <T> boolean isInvalid(T validatable) {